(19)

(11)

EP 2 223 187 A1

(12)

(43) Date of publication: 01.09.2010 Bulletin 2010/35 (21) Application number: 08857831.5 (22) Date of filing: 04.12.2008

(51) International Patent Classification (IPC):  G03G 5/00(2006.01) G03G 21/00(2006.01) (86) International application number: PCT/JP2008/072466 (87) International publication number: WO 2009/072667 (11.06.2009 Gazette 2009/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 06.12.2007 JP 2007315465 (71) Applicant: Ricoh Company, Ltd. Tokyo 143-8555 (JP)	(72) Inventors: KAWASAKI, Yoshiaki Tokyo 143-8555 (JP) SUGINO, Akihiro Tokyo 143-8555 (JP) HIROSE, Mitsuaki Tokyo 143-8555 (JP) MURAMATSU, Susumu Tokyo 143-8555 (JP) KURIBAYASHI, Katsuo Numazu-shi Shizuoka 410-0001 (JP) WAKABAYASHI, Shoichi Numazu-shi Shizuoka 410-0001 (JP) (74) Representative: Barz, Peter  Patentanwalt Dr. Peter Barz Kaiserplatz 2 D-80803 München D-80803 München (DE)